🧪 Lab 9 of 21 · Science Lab - Advance 3 · Class 10
Experiment 8 — Balance the Equation
Topic: Chemistry · Class 10 · Chemical reactions and equations
Aim: Balance the equation Fe + H₂O → Fe₃O₄ + H₂ with the smallest whole numbers.
Daily: A balanced equation is how a chemist calculates how much raw material a factory needs and how much product it will get. Getting it wrong wastes tonnes of material.
Question: Why can you not balance an equation by changing H₂O into H₂O₂?
Exp: Only coefficients may be adjusted; the compounds are fixed.
Question: Fe + CuSO₄ → FeSO₄ + Cu is an example of…
Exp: A more reactive metal displaces a less reactive one.
Exp: It absorbs energy from sunlight.
Question: In a redox reaction, the substance that gains oxygen is…
Exp: The other one is reduced.
Question: The symbol (aq) means the substance is…